The Leon Rockwell Papers (1829-1986), consist of materials that document Leon Rockwell's life in Las Vegas, Nevada from 1906 until his death in 1968. Included are diaries, correspondence, photographs, postcards, Las Vegas community event programs, ledger sheets, business cards, and scrapbooks. There are a number of books, information on organizations and businesses that Rockwell owned, real estate documents, and early records of the Las Vegas Volunteer Fire Department, of which Rockwell was an original member.

The Katherine A. Spilde Papers on Native American Gaming include materials collected by anthropologist Katherine Spilde about Native American gaming and the greater gaming industry. The materials date from 1789 to 2015, with the bulk of materials dating from 1995 to 2010. Materials dating from the eighteenth and nineteenth centuries are reproductions of key court opinions and treaties concerning Native American rights and sovereignty. The majority of the materials document Native American gaming following the passage of the 1988 Indian Gaming Regulatory Act (IGRA). The papers detail Native American gaming enterprises both on and off reservations, the socioeconomic impact of gaming, and the legislative history of Native American gaming in the United States. The papers include research and subject files created by Dr. Spilde during her employment with the National Gambling Impact Study Commission (NGISC), the National Indian Gaming Association (NIGA), and the Harvard Project on American Indian Economic Development (HPAIED). The collection includes socioeconomic reports; testimonies; correspondence; memos; press releases; photographs; audiovisual materials; promotional materials from casinos and tourist attractions; brochures; fact sheets; summaries; booklets; pamphlets; advertisements; tourism materials; journal articles; legal briefs; legislative documents; court opinions; Dr. Spilde’s notes; presentations; packets, agenda, schedules, and itineraries from conferences; periodicals; Native American and community newspapers; and newspaper articles. The collection includes materials about over one hundred federally recognized Native American nations. Also included are materials that document the socioeconomic impact of gaming, the international gaming industry, criminal activities related to gaming, advertising about gaming and casinos, lotteries, internet gaming, compulsive gambling, and bankruptcy as a result of gambling.